Hyundai i20 Owner's Manual page 220

Convenient features
The following conditions are normal and
do not indicate radio trouble:
FM reception FM reception
• Fading - As your vehicle moves away
from the radio station, the signal will
weaken and sound will begin to fade.
When this occurs, we suggest that you
select another stronger station.
• Flutter/Static - Weak FM signals
or large obstructions between the
transmitter and your radio can disturb
the signal causing static or fluttering
noises to occur. Reducing the treble
level may lessen this effect until the
disturbance clears.
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FM reception FM reception
• Multi-Path Cancellation - Radio signals
being received from several directions
can cause distortion or fluttering.
JBM004 JBM004
This can be caused by a direct and
reflected signal from the same station,
or by signals from two stations with
close frequencies. If this occurs, select
another station until the condition has
passed.
Using a cellular phone or a two-way
radio
When a cellular phone is used inside
the vehicle, noise may be produced
from the audio system. This does not
mean that something is wrong with the
audio equipment. In such a case, use
the cellular phone at a place as far as
possible from the audio equipment.
NOTICE
When using a communication system
such as a cellular phone or a radio set
inside the vehicle, a separate external
antenna must be fitted. When a cellular
phone or a radio set is used with an
internal antenna alone, it may interfere
with the vehicle's electrical system and
adversely affect safe operation of the
vehicle.
While listening to the radio, if devices
such as laptop charger are connected
to the socket, it may generate noise.
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